Combination-lock



1.H. 'P|LLlNGs.

,COMBINATION LOCK. y APPLICATION FILED NOV.vl8.1919.

Patented oet; 12,1920.

2 SHEETS-SHEET I.

wmmllmu 1. H. Plumes.l

COMBINATION LOCK.

APfLlcATloN FILED Nov.18,19l9.

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aum @li UNITED STATES PATENT I OFFICE.

JOHN H. PILLINGS, 0F HAMILTON, OHIO.

I coMBINATIoN-LOCK.

figures of reference marked thereon, which p form a part of this specification.

This invention relates to new and useful improvements in combination locks for switch boX keys for automobiles, and consists of a simple and efficient device of this nature adapted to be applied to the switch boX and affording a secure means for holding vthe switch key of the type commonly used upon Ford cars.

The invention consists of a simple and efficient apparatus of this nature having various details of construction,l combination and arrangement of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claims.

I illustrate my invention in the accompany drawings which, with the numerals of reference marked thereon, form a part ofk this application7 and in which: Figure 1 is a side elevation of the invention shown as applied to a switch boX. Fig. 2 is a front elevation of the device shown in Fig. 1, with the button 12 depressed. y l Fig..3 is a view'in elevation with thel lid of the casing removed, the button 12 being shown elevated. l

Fig. 4 is a view of the inner face of the lid.

Fig. 5 is a cross sectional view on line 4-4 of Fig. 2. v

Fig.. 6 is a sectional view on line 5-5 of Fig.2..y

Figs. 7, 8V and- 9 are detail views of the inner faces of the -dial plates.

Figs. 10, 11 and 12 'are' detail sectional .views transversely throughparts of the devlce. .s

Fig.` 13 is a 4fragmentary sectional detail view on the line 13-'-13 of Fig. 3, the key being omitted. 'f

. Specvication of Letters Patent.

recessed as at 3".

PatentedOct. 12, 1,920.

' Application led November 18, 1919. Serial No. 338,827.

Reference now being had to thedetails of the drawings by numerals:

1 designates theusual switch boX and 2 the key for switching on or off the current, and to the switch boX is fastened a casing 3 which may be of any suitable size or shape, and which in the present instance is shown as having a recess 5 extending centrally through the rear wall thereof. A suitable lid 3x formsV a closure to the casing and is n A yoke 7 has its lower endpositioned to have a vertical movement within said recess 5 and the recess 3, and apost or pin, designated byj numeral 9, is fastened to the upper end of the yoke and extends through an aperture 10 in the wall of the casing 3, and upon the outer end of said post or pin is a knob .12.- A coiled spring 13 is mounted upon the'pin and interposed between the knob and the side wall vof the casing, the purpose of said spring ing meansV referred to may havev beenV removed from the lid. Said pin has av contracted end 17 extending into the opening in the yoke and is adapted to engage. an aperture in the lug 18 upon the inner face of the lid when the deviceV is ink a locked relation, thus affording a` further precautionary means for holding the lid upon the casing so that the mechanism within may 'not be tampered with.

Projecting laterally from the face of the i yoke is an integral hook 20 passing through an opening 21 formed in therear wall of the casing and adapted to engage over the marginal edgesof the opening when the ,yoke'is .at its farthest downward limit.v A-pin 21a Vprojects from the side of the lower portion of the yoke which moves in the recess 5 and is adapted to engage a notch 22 formed in the wall of the casing adjacent'to said recess'l and which coperates with saidk kintegral hook upon the upper Yportion of the yoke to securely hold ythe latter in place V'when inaJ Vlocked position.

The extreme lower end ofthe yoke isrprovided with a slot'23, the-bottom `of `which is inclined, and which slot is adapted to re-V ceive the upper portion of the key when the yoke is at its lowest limit and which servesVV Y' as-a means for locking the key.

The combination means for lockingand unlocking the device consists of the two sleeves, designated 4respectively by numerals '25 and 26, and a solid member 27, which'. lhave respectively the tumblers 26 and integral ton-gue l upon the yoke to allow Y the latter -to be .moved under the :influence of said spring .13,to an unlocked position or in such a position that the upper end of the switch 'key will be tree from the slot in the lower portion of the yoke.

Mounted .upon lthe sleeve 25 -is ya dial 36 having a central opening 37 from which radiate key slots, eight in number being formed therein, and which are vadapted .to receivewthe pi-n projecting 1from theFcircunr ference of the sleeve upon which the :dial is mounted,'the severalkey slot-s being for the purpose of changingV the combination. A similardial 3S is provided with a central opening 39 to ltit over the sleeve 26 and is provided with the radial key slots40 adapted to receive the pin 29, and .a'third dial disk 41 with a central `opening 42 to receive the member 27 and hasthe radial key slots 431120, receive the pin 230.' Y j 'The circumference of each :dial diskbears letters from A to H and feachidentiifying a transverse line or ygroove '50. v

Assuming the parts .are `in a locked position as shown in the 4drawings and it is desired to'v unlock the saine, and assuming that the combination consists of the'letters C, D and H, commencing with the small dial, the letter C upon the circumference thereof is'thrown to a positionsothat the line 50, identifying the letter'C, comes into alinement withthe indicating Yrib v48 upon the outer face of the lid. [When the dial is rotated themember27 is also given a rotation therewith, by reason ofthe piniupon `themember engaginga particular key Vslotl correspondingto the letter C upon the circumference of the dial. This movement-of the dial will bring the notch 3'3 i-n alinement with the tongue 35 whichv projects into the opening at the lower portion of the yoke.V The dial 38 of lnext larger diameter is then rotated to' bring'the indicating line or groove $5,0,iclentilied by @letter l), into 38. 4This movement of the sleeve will Vbring 1 i the .notch 32 jin alinement with the tongue upon the yoke. A similar rotary movementV is impartedvto the dial uponV the sleeve '25 l and 'which will cause said :sleeve yto rotate to bring lits notch also into alinementA with theV yother ltwo i ^notches `and Iwith the tongue r4uponthe yoke, lwhich being done, the spring upon the post will I,th-row the yoke upward and release the ykey from the :slot inthe lower portion Tof the yoke, thus-allowing the key of the switch to fbe lturned 'for' the purpose of turning on the current.

By the provisionbf a combinationlock' madey in accordance witlrm'y invention, it

Ywill be noted that the combination may ibe easily and quicklychanged iby the'mani'pulation of the dials to bring =one -or another of the slots in Vposition to receive 1the' pin uponpthe sleeve. 4When thedevice is Vin a locked relation with reference tothe .key lup'onfthe switch,thie lid will be securely held Ion `by the means shown, .raking it impossibleto remove thelid Vuntil the "disks are thrown into positionto allowitfhe yoke to automatically release the switchley.

What I claim -tobenew-is: I 1.V A combination lock forjswitch keys comprising in combinationwith thefswitch box, a casing fastened thereto, a yoke movable within :the fcasing, concentrically mounted rotatable `sleeves :and a member with notched tumblers, a projection upon each sleeve andv member, dirais rotatably mounted upon v said sleeves vand"member, and.'

each havingralplurality ofkey slots to4 en-` gageVU said projections, Va tonguel upon y'the yokel adapted toyengage the several notches in said tumblers when in alinement to Vpermit the movement of the yoke to release the switch key, a lid to the box, and means for 'holding the lid -to the casing when the switch key is inloc'ked relation. 2, AA combinationV lock for switch Akeys comprising in combination withA the switch.

boX, a casing fastened thereto and provided Y' with a recess in the wall thereof, a yoke withinV the casing and provided withaportion movablefwithin vsaid recess to -hold the key in a lockedor unlocked relation, combination mechanism for permitting the'move- Yment of theyoke inone direction, -aflidjto the casing, projections upon the inner tace of the lid, and wings-upon theyokefadapted to interlock with said projections to hold the lid Yupon the casing 'when'the yoke is in a locked relation `with referencel to the switch key. Y y

izo

3. A combination lock for switch keys comprising in combination with the switch box, a casing fastened thereto and provided with a recess in the wall thereof, a yoke within the casing and provided with a portion movable within said recess to hold the key in a locked or unlocked relation, combination mechanism for permitting the movement of the yoke in one direction, a lid to the casing, projections upon the inner face of the lid, and wings upon the yoke adapted to interlock with said projections, a pin upon the yoke adapted to engage an lapertured lug upon the lid when theyoke is in a locked relation withreference to the switch key.

4L. A combination lock for switch keys comprising in combination with the switch box, a casing fastened thereto and provided with a recess in the wall thereof,`a `yoke within the casing and provided with a portion movable within said recess to hold the key in a locked or unlocked relation, combination mechanism for permitting the movement of the yoke in one direction, the wall of the casing having an opening therein, an integral hook shaped projection upon the yoke extending through said opening Y and 'adapted to engage over the marginal edge thereof, a lid for the casing and provided with projections upon the inner face thereof, wings upon the yoke for engagement with said projections, and a pin for moving the yoke, the inner face of the lid having an apertured lug to receive said pin.

5. A combination lock for switch keys comprising in combination with the switch box, a casing fastened thereto and provided with a recess in the wall thereof, a yoke for engagement with said lugs when theV yoke is in a locked relation with the switch' key.

6. A combination lock for switch keys comprising in combination with the switch boX, a casing fastened thereto and provided with a recess in the wall thereof` a yoke mounted within the casing and having a Vportion movable within said recess and slotted upon its lower end to receive the upper end of the switch key, a tongue projecting from said yoke, concentrically mounted rotatable sleeves and a member provided with notched tumblers, a pin projecting from each sleeve and member, dials mounted upon the sleeves and member and provided with radial key slots for engagement with said pins, a post fastened to one end of the yoke and extending through the wall of the casing, a spring upon said post j adapted to throw the yoke to an unlocked position when the notches in the tumblers are in registration with saidtongue.

In testimony whereof I hereunto a'HiX 1n signature. Y

'Y JOHN H, PILLiNes. 

